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mmc: tmio: care about DMA tx/rx addr offset

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Basically, SD_BUF0 Tx/Rx addresses are same
in normal TMIO controller,
but, it is different on Renesas R-Car SDHI controller
if it uses DMAC
(Rx address needs to add 0x2000 to Tx address)

This patch adds new .dma_rx_offset and cares it

Tested-by: Nguyen Xuan Nui <nx-nui@jinso.co.jp>
Tested-by: Hiep Cao Minh <cm-hiep@jinso.co.jp>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Ben Dooks <ben-linux@fluff.org>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Kuninori Morimoto
2014-08-24 19:58:48 -07:00
committed by Ulf Hansson
parent 341eb6a4e7
commit 384b2cbd56
3 changed files with 5 additions and 1 deletions
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1
include/linux/mfd/tmio.h
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@@ -96,6 +96,7 @@ struct tmio_mmc_dma {
int slave_id_tx;
int slave_id_rx;
int alignment_shift;
dma_addr_t dma_rx_offset;
bool (*filter)(struct dma_chan *chan, void *arg);
};